Extension spring is a type of spring designed to store energy and provide specific tensile force when stretched. It is widely used in various mechanical systems and devices that require precise tension control. Its key feature is the ability to deliver consistent recoil force when extended to a specific length, ensuring smooth operation and system reliability. Extension spring comes in various end designs including loops, hooks and threaded attachments, such as half hooks, German loops, English loops, extended hooks, side hooks and threaded eyelets, to meet diverse connection requirements. Cold-coiled extension spring can be designed with initial tension, ensuring a predefined resistance before stretching begins, which is crucial for specialized applications.
Our extension spring products range from micro-sized to large-scale dimensions, with material options including carbon steel, nickel alloys, titanium alloys and copper alloys. Wire diameters range from 0.03mm to 26mm, with larger sizes processed using hot coiling techniques. Additionally, square-section or other specially shaped wires can be provided based on specific application needs.
Whether for precision electronics, automotive components or large-scale industrial machinery, our extension springs offer high-quality, customized solutions to meet the stringent demands of various industries.